It might not necessarily be glitched. Of course I know as much as you, so I could be wrong, but it might simply be how it counts the Hawkeyes.
A) It counts one landed hawkeye for each skill use that hit an or multiple enemies.
B) It counts all the rockets landed on an or multiple enemies. I.e with the right helix augment at level 4, you can get 3 hits with one skill use.
C) It counts all enemies hit by a single use of the skill. I.e if you hawkeye in the middle of a full minion wave, you’ll get 5 activations on that rocket.
D) It counts all rockets on all enemies. I.e if you have the right helix augment and hit a full minion wave, you can get 15 activations.
If D is how it counts (which I believe it is due to wvery target being marked and each rocket which triggers a hawkeye plays the characteristic sound when you land them), then it’s highly plausible depending on usage.